Your list of anime tells me are into adventure anime or with heavy action.
First thing I thought of was Katanagatari, where our heroes go on a journey to collect 12 legendary swords.
Something with heavy action: Black Lagoon- businessman gets abandoned on a pirate island and joins them
something more adult: Vinland Saga- viking epic following a young boy on a quest for revenge
Same, went in blind, only because so many people were hyped for it. And I can see why, it was a lot of fun. Though, I agree that they are oddly chill about the MC’s sister considered she is on an unknown clock to being digested and unable to be revived.
Like, is there timer measured in weeks? months? years? That’s awfully long.